TROJ_BANKER.WUUW
Trojan:Win32/Dynamer!ac (Microsoft); Packed.Generic.460 (Symantec); HEUR:Trojan.Win32.Generic (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Proxy.BAMQ (AVG)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
2,094,080 bytes
EXE
Yes
14 Jun 2014
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This Trojan adds the following registry keys:
HKEY_USERS\S-1-5-21-1645522239-1292428093-682003330-1003\Software\
Microsoft\Internet Explorer\Privacy
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\ROOT\Certificates\
AB00E3B6DA03470E4BE5418FDF86E3E1706ED813
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings
AutoConfigURL = "https://{BLOCKED}dora.com/search/yand.exd"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
AutoConfigURL = "https://{BLOCKED}dora.com/search/yand.exd"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Privacy
ClearBrowsingHistoryOnExit = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Privacy
CleanTIF = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Privacy
UseAllowList = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\ROOT\Certificates\
AB00E3B6DA03470E4BE5418FDF86E3E1706ED813
Blob = "{random values}"
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Connections
DefaultConnectionSettings = "{random values}"
(Note: The default value data of the said registry entry is {random values}.)
This report is generated via an automated analysis system.
SOLUTION
9.700
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_USERS\S-1-5-21-1645522239-1292428093-682003330-1003\Software\Microsoft\Internet Explorer
- Privacy
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates
- AB00E3B6DA03470E4BE5418FDF86E3E1706ED813
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
- AutoConfigURL = "https://{BLOCKED}dora.com/search/yand.exd"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
- AutoConfigURL = "https://{BLOCKED}dora.com/search/yand.exd"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Privacy
- ClearBrowsingHistoryOnExit = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Privacy
- CleanTIF = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Privacy
- UseAllowList = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\AB00E3B6DA03470E4BE5418FDF86E3E1706ED813
- Blob = "{random values}"
Step 4
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
- From: DefaultConnectionSettings = "{random values}"
To: DefaultConnectionSettings = ""{random values}""
- From: DefaultConnectionSettings = "{random values}"
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_BANKER.WUUW. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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